Nastika (Aturam Sky Fortress)

Without further information, we cannot process this report. Which quest, what exactly happens (or does not)?
You can find quest ID's by typing .id <quest link> where the link is inserted via ctrl + right click on the quest. This also works for items and NPCs (for NPCs, you must target them and omit the link parameter).

Well for Asmo side is Ninveh (id 804821) that start it.
[Instance] Occupying the Sky Fortress.
When you kill Nastika in the first room (DOTs basically killed her before she could cast her last skill before to disappear) you will be stucked in that room without access the second encounter with her in the Surkana room (return/scroll/homeward still work to exit).